IROCK BROADCASTBOOMBOXPump up the volume with a portable FM radiostation. By Tom Anderson

Irock transmitters let you play audio from your plate, which I later secured inside the case at the
iPod (or CD player) through your car stereo by end of the project. This way, I could do almost all
“broadcasting” it via FM to the antenna just a few of the delicate assembly out in the open. With
feet away. It’s great when you’re in a car, but what all the drilling, it’s also important to keep metal
if you want to transmit over a larger area? flakes off of the circuit board.

Using common electronics components and an First, disassemble the irock by removing the
old ammo box, I turned my irock into a portable three screws underneath the battery cover. Lift
microradio station with a range of about 200 feet. the board out, cut off the battery wires, and it’s
Instead of drawing power from a dashboard’s ready to mount. For the plate, I used a 3"x4"
12VDC power jack, it uses a modified flashlight piece of 0.06-inch-thick
and two D-cell batteries, which run the rig for aluminum, cut with tin
about 18-24 hours. snips, and then filed the

The main trick I found was to start by mount- edges smooth. Using the
ing the irock’s printed circuit board onto a metal existing holes on the PC